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Question- Find the density in the unit of g/cm3 of F2 gas at 20.0oC and 1 bar, given that molecular weight of F2 is 38.0 g/mol.
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0.25 mol of formic acid (HCO2H) is dissolved in enough water to make one liter of solution. The pH of that solution is 2.19. The Ka of formic acid is
the two flask are filled with nitrogen gas and when both are immersed in boiling water the gas pressure inside the system is .5 atm. one of the flask is then immersed in an ice water mixture, keeping the other in the boiling water. calculate the n..
what is the concentration of the dye in a solution with a percent transmittance reading of 45.8% at 640 nm
What is the enthalpy of this reaction. Assume that no heat is lost to the surroundings or to the coffee cup itself and that the specific heat of the solution is the same as that of pure water.
Use the dipole moments of and ( = 1.08, = 1.82) together with the percent ionic character of each bond ( 20% ionic, 45% ionic) to estimate the bond length in each molecule.
What volume of pure O2(g), collected at 27°C and 746 torr, would be generated by decomposition of 128 g of a 50.0% by mass hydrogen peroxide solution?
What is the empirical formula of the compound if a 5.56 mg sample of a compound containing carbon, hydrogen, and oxygen underwent combustion producing 12.64 mg of CO2 and 5.16 mg of H2O
They have a polar end b. The have a hydrophobic end c. The are often sodium slats of long chain fatty acids. d. The hydrophilic end of the soap molecules is attracted by grease. e. they precipitate in water that contains Fe3+ ions
Arsenic acid (H3AsO4) is a triprotic acid with a Ka1=5E-3 Ka2=8E-8 and Ka3=6E-10. calculate [H+], [OH-], [H3AsO4], [H2AsO4-][HAsO4 2-], and [AsO4 3-] in a 0.20 M arsenic acid solution.
1.90-g sample of a large biomolecule was dissolved in 23.0 g of carbon tetrachloride. The boiling point of this solution was determined to be 77.85°C. Calculate the molar mass of the biomolecule.
It is known that the ^2P terms lies at 670.78nm above the ground state. whcih is 1s^2 2s^1 ^2S. calculate the ionization energy ofthe ground state atom
The PH of a solution of a solution is 8 , what are the hydrogen - and hydroxide ion concentration
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